| Parameter |
Value |
| Designation |
234P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-12-22T16:26:47.500800Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:12:30Z |
| Obs used |
377 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
22.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-04-28.0000000 |
| e |
0.25077789 |
| q (au) |
2.858038 |
| a (au) |
3.814674 |
| i (deg) |
11.516795 |
| Ω (om, deg) |
179.719928 |
| ω (w, deg) |
358.128979 |
| M (ma, deg) |
113.411811 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.435 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.435 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.675 |
| k |
0.800 |
| δ90 |
10.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
19:41:02.58 |
-07:15:57.7 |
HIP 96813 |
15.39 |
| 2026-06-01 12:00 |
19:40:53.00 |
-07:15:14.8 |
HIP 96813 |
15.61 |
| 2026-06-02 00:00 |
19:40:43.19 |
-07:14:33.2 |
HIP 96813 |
16.19 |
| 2026-06-02 12:00 |
19:40:33.15 |
-07:13:52.8 |
HIP 96813 |
17.11 |
| 2026-06-03 00:00 |
19:40:22.87 |
-07:13:13.6 |
HIP 96813 |
18.35 |
| 2026-06-03 12:00 |
19:40:12.36 |
-07:12:35.7 |
HIP 96813 |
19.87 |
| 2026-06-04 00:00 |
19:40:01.61 |
-07:11:59.1 |
HIP 96813 |
21.62 |
| 2026-06-04 12:00 |
19:39:50.64 |
-07:11:23.8 |
HIP 96813 |
23.58 |
| 2026-06-05 00:00 |
19:39:39.44 |
-07:10:49.8 |
HIP 96813 |
25.71 |
| 2026-06-05 12:00 |
19:39:28.01 |
-07:10:17.1 |
HIP 96718 |
27.94 |
| 2026-06-06 00:00 |
19:39:16.36 |
-07:09:45.6 |
HIP 96718 |
27.88 |
| 2026-06-06 12:00 |
19:39:04.49 |
-07:09:15.5 |
HIP 96718 |
28.18 |
| 2026-06-07 00:00 |
19:38:52.39 |
-07:08:46.7 |
HIP 96718 |
28.82 |
| 2026-06-07 12:00 |
19:38:40.07 |
-07:08:19.3 |
HIP 96483 |
27.28 |
| 2026-06-08 00:00 |
19:38:27.54 |
-07:07:53.1 |
HIP 96483 |
24.16 |
| 2026-06-08 12:00 |
19:38:14.79 |
-07:07:28.3 |
HIP 96483 |
21.00 |
| 2026-06-09 00:00 |
19:38:01.83 |
-07:07:04.8 |
HIP 96483 |
17.81 |
| 2026-06-09 12:00 |
19:37:48.65 |
-07:06:42.7 |
HIP 96483 |
14.60 |
| 2026-06-10 00:00 |
19:37:35.27 |
-07:06:22.0 |
HIP 96483 |
11.40 |
| 2026-06-10 12:00 |
19:37:21.68 |
-07:06:02.6 |
HIP 96483 |
8.27 |
| 2026-06-11 00:00 |
19:37:07.88 |
-07:05:44.6 |
HIP 96483 |
5.44 |
| 2026-06-11 12:00 |
19:36:53.88 |
-07:05:27.9 |
HIP 96483 |
3.82 |
| 2026-06-12 00:00 |
19:36:39.68 |
-07:05:12.6 |
HIP 96483 |
4.94 |
| 2026-06-12 12:00 |
19:36:25.28 |
-07:04:58.7 |
HIP 96483 |
7.74 |
| 2026-06-13 00:00 |
19:36:10.68 |
-07:04:46.2 |
HIP 96483 |
11.06 |
| 2026-06-13 12:00 |
19:35:55.90 |
-07:04:35.1 |
HIP 96483 |
14.58 |
| 2026-06-14 00:00 |
19:35:40.92 |
-07:04:25.4 |
HIP 96368 |
14.61 |
| 2026-06-14 12:00 |
19:35:25.76 |
-07:04:17.1 |
HIP 96368 |
14.89 |
| 2026-06-15 00:00 |
19:35:10.41 |
-07:04:10.2 |
HIP 96368 |
16.06 |
| 2026-06-15 12:00 |
19:34:54.87 |
-07:04:04.6 |
HIP 96269 |
17.96 |
| 2026-06-16 00:00 |
19:34:39.17 |
-07:04:00.5 |
HIP 96269 |
16.97 |
| 2026-06-16 12:00 |
19:34:23.28 |
-07:03:57.8 |
HIP 96269 |
16.87 |
| 2026-06-17 00:00 |
19:34:07.22 |
-07:03:56.5 |
HIP 96269 |
17.70 |
| 2026-06-17 12:00 |
19:33:51.00 |
-07:03:56.6 |
HIP 96269 |
19.38 |
| 2026-06-18 00:00 |
19:33:34.61 |
-07:03:58.2 |
HIP 96269 |
21.73 |
| 2026-06-18 12:00 |
19:33:18.06 |
-07:04:01.1 |
HIP 96269 |
24.58 |
| 2026-06-19 00:00 |
19:33:01.34 |
-07:04:05.4 |
HIP 96269 |
27.79 |
| 2026-06-19 12:00 |
19:32:44.48 |
-07:04:11.2 |
HIP 96269 |
31.27 |
| 2026-06-20 00:00 |
19:32:27.45 |
-07:04:18.3 |
HIP 96269 |
34.95 |
| 2026-06-20 12:00 |
19:32:10.29 |
-07:04:26.9 |
HIP 95962 |
38.72 |
| 2026-06-21 00:00 |
19:31:52.97 |
-07:04:36.8 |
HIP 95962 |
36.92 |
| 2026-06-21 12:00 |
19:31:35.51 |
-07:04:48.2 |
HIP 95820 |
33.35 |
| 2026-06-22 00:00 |
19:31:17.92 |
-07:05:00.9 |
HIP 95820 |
29.02 |